Observation of Regions of Negative Differential Conductivity and Current Generation during Tunneling through Zero-Dimensional Defect Levels of the h-BN Barrier in Graphene/h-BN/Graphene Heterostructures

Abstract

Tunneling and magnetic tunneling are investigated in graphene/h-BN/graphene van der Waals heterosystems. Two new types of systems are found, in which negative differential conductivity regions are implemented due to resonant tunneling through defect levels in the h-BN barrier, and current caused by their presence is generated.